.login-container{
    height: calc(100% - 50px);
    display: flex;
    justify-content: center;
    align-items: center;
}
.login-dialog{
    width: 400px;
    height: 400px;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
}
html, body{
    height: 100%;
    background-image: url(../image/background.png);
    background-position: center;
    background-repeat: no-repeat;
}
/*标题部分*/
.login-dialog h3{
    text-align: center;
    padding: 50px 0;
}
.login-dialog .row{
    width: 100%;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-dialog .row span{
    width: 100px;
    font-weight: 666;
}
#username,#password{
    width: 200px;
    height: 40px;
    font-size: 20px;
    line-height: 40px;
    padding-left: 10px;
    border: none;
    outline: none;
    border-radius: 10px;
}
#submit{
    width: 300px;
    height: 50px;
    background-color: rgb(0,128,0);
    color: white;
    border:none;
    outline: none;
    border-radius: 10px;
    margin-top: 30px;
}
#submit:active{
    background-color:#968e8e;
}
.register {
    text-align: center;
    margin-top: 30px;
}
.register button {
    background: none;
    border: none;
    color: #007BFF;
    text-decoration: underline;
    cursor: pointer;
}
.register button:hover {
    color: #0056b3;
}